Summary of Fair Values of Assets Acquired and Liabilities Assumed Purchase Price Allocation (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended
	Feb. 19, 2015	Apr. 03, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill		$ 98,299	$ 90,746
Applimotion Inc.
Business Acquisition [Line Items]
Cash	317
Accounts receivable	1,821
Inventory	2,041
Prepaid expenses and other current assets	89
Property and equipment	308
Intangible assets	6,071
Goodwill	7,553
Total assets acquired	18,200
Accounts payable	964
Other liabilities	717
Deferred tax liabilities	2,248
Total liabilities assumed	3,929
Total assets acquired and liabilities assumed	14,271
Less: cash acquired	317
Plus: working capital adjustment	863	900
Total purchase price, net of cash acquired	14,817
Less: contingent consideration	965
Net cash used for acquisition of business	$ 13,852